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Finding the Fourth Proportional to 2,122.18, 3,179 and 888.96

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Solution

The fourth proportional to 2,122.18, 3,179 and 888.96 is: 1,331.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.18 : 3,179 = 888.96 : x
  2. Step 2: Convert to fraction form
    2,122.18/3,179 = 888.96/x
  3. Step 3: Cross multiply
    2,122.18x = 3,179 × 888.96
  4. Step 4: Simplify right side
    2,122.18x = 2,826,003.84
  5. Step 5: Solve for x
    x = 2,826,003.84/2,122.18
  6. Step 6: Final answer
    x = 1,331.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.